Removably mounted plow for elongated tubular materials

ABSTRACT

A system for installation of continuous elongated tubular material in the ground involves: an agricultural tractor having a rear three-point tractor hitch, a rear drawbar and rotatable elastomeric ground-engaging interfaces; a plow mount comprising a front three-point mount hitch for connection to the rear three-point tractor hitch and a clamping connector for connection to the drawbar; and, a plow comprising a depth-adjustable blade, the plow mountable on the plow mount.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. Ser. No. 16/922,323 filedJul. 7, 2020, which claims the benefit of U.S. Provisional PatentApplication Ser. No. 62/875,540 filed Jul. 18, 2019, the entire contentsof all of which are herein incorporated by reference.

FIELD

This application relates to systems and apparatuses for laying elongatedtubular materials in the ground.

BACKGROUND

Systems for laying conduit, for example electrical cables and the like,in the ground are known in the art, for example U.S. Pat. No. 8,047,744issued Nov. 1, 2011. While such systems are generally adequate for theirpurposes, recent developments in power and information transmissioncabling, such as fiber optic technology, and in fluid conveyance havegiven rise to the desire to upgrade infrastructure related to power,information and fluid conveyance. Because much of the infrastructure islocated next to pre-existing roadways, driveways and the like, the useof systems such as described in U.S. Pat. No. 8,047,744 is lessdesirable because the heavy duty, metal-tracked vehicles used are proneto damaging the pre-existing roadways, driveways and the like. However,existing lighter duty vehicles with elastomeric tires or tracks, lackthe means to properly mount and operate the reels and trench former usedfor laying the conduit underground.

There remains a need for a roadway-friendly system and apparatus forlaying conduit, cabling and the like in the ground.

SUMMARY

In one aspect, there is provided a system for installation of continuouselongated tubular material in the ground, the system comprising: anagricultural tractor having a rear three-point tractor hitch, a reardrawbar, rotatable elastomeric ground-engaging interfaces, an infinitelyvariable speed transmission and a load sensing hydraulic circuitcomprising a pressure compensated load sensing pump and at least threehydraulic fluid conduits supplying outgoing hydraulic fluid, returninghydraulic fluid and hydraulic load sensing fluid; a plow mountcomprising a front three-point mount hitch for connection to the rearthree-point tractor hitch and a clamping connector for connection to thedrawbar; a plow for creating a trench in the ground, the plow mountableon the plow mount, the plow comprising a depth-adjustable blade, ahydraulic cylinder for adjusting depth of the blade in the ground,electrically actuatable hydraulic valves in fluid communication with thehydraulic cylinder and at least three hydraulic fluid lines between theelectrically actuatable hydraulic valves of the plow and the hydrauliccircuit of the tractor; and, a control interface in electroniccommunication with the plow for controlling the electrically actuatablehydraulic valves.

In another aspect, there is provided a system for installation ofcontinuous elongated tubular material in the ground, the systemcomprising: an agricultural tractor having a rear three-point tractorhitch, a rear drawbar and rotatable elastomeric ground-engaginginterfaces; a plow mount comprising a front three-point mount hitch forconnection to the rear three-point tractor hitch and a clampingconnector for connection to the drawbar; a plow comprising adepth-adjustable blade, the plow mountable on the plow mount.

In another aspect, there is provided a system for installation ofcontinuous elongated tubular material in the ground, the systemcomprising: an agricultural tractor; a plow mounted on the tractor; afirst global positioning system mounted on the tractor; a second globalpositioning system mounted on the plow; and, a control interface inelectronic communication with the first and second GPS systems forcontrolling operation of the plow based on information provided by thefirst and second GPS systems.

In another aspect, there is provided a plow mount comprising: ahorizontally oriented bottom plate; a vertically oriented back plateextending upwardly from the bottom plate proximate a rear end of thebottom plate; three connectors rigidly secured to a front face of theback plate, each of the connectors comprising a pair of spaced aparthitch connector plates having aligned through-apertures for receivinghitch bars from a three-point hitch and securing the hitch bars betweenthe plates with a pin, the three connectors forming a front three-pointmount hitch of the plow mount; and, a top plate and a spacer, the topplate spaced apart from the bottom plate by the spacer and clampable tothe bottom plate through the spacer proximate a front end of the bottomplate, the top plate spaced apart from the bottom plate to provide a gapwithin which a drawbar of a tractor may be clamped when the top plate isclamped to the bottom plate, the top plate, bottom plate and drawbarcomprising aligned through-apertures for receiving a hitch pin tofurther secure the drawbar to the plow mount, the top plate, spacer andbottom plate forming a clamping connector for the drawbar.

The elongated tubular material may include, for example, fiber opticcable, electrical cable, other wire material, piping and the like.Preferably, the elongated tubular material is fiber optic cable. Theelongated tubular material is typically provided wound on a rotatablereel and supplied to the trench by unwinding the elongated tubularmaterial into the trench. The reel may be transported on a separatevehicle that travels along with the tractor, or the reel may besupported on the tractor. Preferably, the tractor comprises a reel rackmounted on a front of the tractor for supporting the rotatable reel atthe front of the tractor. The reel rack preferably comprises athree-point connection for connecting to a front three-point tractorhitch of the tractor.

The system may further comprise a fairlead structure mounted on thetractor, plow mount and/or plow for guiding the elongated tubularmaterial from the rotatable reel to a rear of the plow where theelongated tubular material is inserted into the ground. The fairleadstructure is particularly useful when the rotatable reel is mounted atthe front of the tractor.

The rotatable elastomeric ground-engaging interfaces preferably compriserubber tires and/or rubber tracks.

In one embodiment, the system may comprise a first global positioningsystem mounted on the tractor and a second global positioning systemmounted on the plow. The control interface may be in electroniccommunication with the first and second GPS systems for controllingoperation of the plow based on information provided by the first andsecond GPS systems. The information may comprise position of the plow ina horizontal plane, height of the plow in a vertical axis with respectto the ground and depth of plow in the ground.

In one embodiment, the plow may comprise electrically actuatablehydraulic valves. The electrically actuatable hydraulic valves maycomprise quick release hydraulic connections for connecting the valvesto the hydraulic circuit of the tractor. Quick release connectionsfacilitate connection and disconnection of the plow from the plow mount.

A specialized plow mount may be used to mount the plow on the tractor.Agricultural tractors are typically not well suited for supporting aplow for installation of continuous elongated tubular material in theground. Simply bolting the plow to the tractor is laborious and unsuitedfor efficient connection and disconnection of the plow to and from thetractor. In an embodiment of the present system, a specialized plowmount utilizing the rear three-point tractor hitch of a tractor can beused to efficiently and easily mount and dismount the plow to and fromthe tractor. When the rear three-point tractor hitch of the tractor isconnected to a front three-point mount hitch of the plow mount, the rearthree-point tractor hitch may be operated to raise the plow mount to aheight where the drawbar of the tractor can be connected to a clampingconnector of the plow mount. During a plowing operation where tractiveeffort is created by drawing the plow through the ground, the drawbarand clamping connector experience most of the tractive effort and thethree-point hitches stabilize lateral movement of the plow mount whileexperiencing substantially less of the tractive effort than the drawbarand clamping connector. In one embodiment, the clamping connector maycomprise a top plate and a bottom plate between which the drawbar can beclamped. The top plate, bottom plate and drawbar may comprise alignedthrough-apertures for receiving a pin to further secure the drawbar tothe clamping connector.

In an embodiment, the plow mount may comprise a horizontally orientedbottom plate, a vertically oriented back plate extending upwardly fromthe bottom plate proximate a rear end of the bottom plate, a pair offlanges having angularly oriented portions extending vertically andinwardly from lateral edges of the bottom plate to meet at an apex, atop plate and a spacer between the top plate and the bottom plate. Theflanges may have upper and lower vertically oriented portions, where theupper vertically oriented portions of the flanges are spaced apart toreceive an upper hitch bar of the rear three-point tractor hitch in afirst pinned connection. The lower vertically oriented portions of theflanges may each be spaced apart from respective vertically orientedstruts to receive lower hitch bars of the rear three-point tractor hitchin second and third pinned connections. The first, second and thirdpinned connections may form the front three-point mount hitch. The upperand lower hitch bars may form the rear three-point tractor hitch. Thetop plate may be spaced apart from the bottom plate by the spacer andclampable to the bottom plate through the spacer proximate a front endof the bottom plate. The top plate may be spaced apart from the bottomplate to provide a gap between the top and bottom plates within whichthe drawbar may be clamped when the top plate is clamped to the bottomplate. The top plate, bottom plate and drawbar may comprise alignedthrough-apertures for receiving a pin to further secure the drawbar tothe plow mount. The top plate, spacer and bottom plate may form theclamping connector for the drawbar.

The plow mount may further comprise plow mounting brackets for mountingthe plow to the plow mount. The plow mounting brackets may compriseclevises extending from a rear face of the vertically oriented backplate. The clevises may receive corresponding structure on the plow andpins may be used to secure the plow to the plow mount.

Further features will be described or will become apparent in the courseof the following detailed description. It should be understood that eachfeature described herein may be utilized in any combination with any oneor more of the other described features, and that each feature does notnecessarily rely on the presence of another feature except where evidentto one of skill in the art.

BRIEF DESCRIPTION OF THE DRAWINGS

For clearer understanding, preferred embodiments will now be describedin detail by way of example, with reference to the accompanyingdrawings, in which:

FIG. 1 depicts a perspective view of a system for installation ofcontinuous elongated tubular material in the ground, the systemincluding an agricultural tractor, a plow mount and a plow;

FIG. 2A depicts a top perspective view of the tractor and the plow mountmounted on the tractor of the system of FIG. 1 ;

FIG. 2B depicts a bottom perspective view of the tractor and the plowmount mounted on the tractor of the system of FIG. 1 ;

FIG. 3A depicts the tractor depicted in FIG. 2A without the plow mount;

FIG. 3B depicts the tractor depicted in FIG. 2B without the plow mount;

FIG. 4A depicts a rear perspective view of the plow mount in the systemof FIG. 1 ;

FIG. 4B depicts a front perspective view of the plow mount in the systemof FIG. 1 ;

FIG. 4C depicts a side view of the plow mount in the system of FIG. 1 ;

FIG. 5A depicts a front perspective view of an alternative embodiment ofa plow mount;

FIG. 5B depicts a side view of the plow mount of FIG. 5A; and,

FIG. 6 depicts a schematic diagram of the hydraulic system of the systemof FIG. 1 .

DETAILED DESCRIPTION

With reference to the Figures, one embodiment of a system 1 forinstalling continuous elongated tubular material 2 (e.g. fiber opticcable) in the ground comprises an all-wheel drive agricultural tractor10, a plow mount 30 mounted on a rear of the tractor 10, a plow 70mounted on a rear of the plow mount 30, a reel rack 90 mounted on afront of the tractor 10 and a fairlead structure 80 mounted on the reelrack 90, plow mount 30 and plow 70. A load sensing hydraulic circuit 120(see FIG. 6 ) includes hydraulic components of the plow 70 and hydrauliccomponents of the tractor 10.

The agricultural tractor 10 comprises four rubber tires 11 that permitthe tractor 10 to drive safely in fields or roadways alike with greatertraction, but without unduly damaging the ground on which the tractor 10is traveling. At the front of the tractor 10 is a front three-pointtractor hitch 12 (only two connecting points shown) for supporting thereel rack 90. At the rear of the tractor 10 is a drawbar 14 rigidlymounted on a bottom of the tractor 10, and a rear three-point tractorhitch 13 for supporting the plow mount 30. The drawbar 14 comprises adrawbar through-aperture 19 for receiving as hitch pin 20 to make apinned connection to the plow mount 30. The rear three-point tractorhitch 13 comprises an upper hitch bar 13 a and two lower hitch bars 13b. The rear three-point tractor hitch 13 is equipped with a hydrauliccylinder 18 for raising and lowering the rear three-point tractor hitch13. The tractor 10 further comprises a first global positioning system15, a control interface 16 for controlling electronic components of thehydraulic circuit 120 and an infinitely variable speed transmission 17,all of which are generically illustrated in FIG. 3A and FIG. 3B. Theinfinitely variable speed transmission 17 permits operating the tractor10 at low speed and high torque. The control interface 16 is typicallylocated in a cab 21 of the tractor 10. The control interface 16interfaces with elements of the hydraulic circuit 120, and iselectrically connected to the cable plow 70. The control interface 16receives power from the tractor 10.

The reel rack 90 comprises a frame 91 comprising a pair of reel cradles92 on which cable reels 93 (only one shown) are rotatably mounted. Thereel rack 90 comprises upwardly extending support arms 94 that supportthe fairlead structure 80 above the height of the tractor 10. The reelrack 90 is mounted on the front of the tractor 10 through a three-pointconnector 95 (only two connection points shown) for connecting to thefront three-point tractor hitch 12 of the tractor 10. Reel-rackhydraulic cylinders 115 (not shown except in FIG. 6 ) may be operatedfrom the control interface 16 in the tractor 10 to manipulate theposition of the reel rack 90, for example to raise and lower the reelrack 90.

The plow mount 30 comprises a horizontally oriented bottom plate 31 anda vertically oriented back plate 32 extending substantiallyperpendicularly upwardly from the bottom plate 31 proximate a rear end33 of the bottom plate 31.

At a front face 38 of the back plate 32, a pair of flanges 34 havingangularly oriented portions 34 a extend vertically and inwardly fromlateral edges of the bottom plate 31 to meet at an apex, the flangeshaving upper vertically oriented portions 34 b and lower verticallyoriented portions 34 c. The upper vertically oriented portions 34 b arespaced apart to receive the upper hitch bar 13 a of the rear three-pointtractor hitch 13, and the upper hitch bar 13 a is pinned to the uppervertically oriented portions 34 b in a first pinned connection with aclevis pin 35. The lower vertically oriented portions 34 c of theflanges 34 are each spaced apart from respective vertically orientedstruts 36 to receive the lower hitch bars 13 b of the rear three-pointtractor hitch 13 in second and third pinned connections with mountingpins 37. The first, second and third pinned connections form a frontthree-point mount hitch of the plow mount 30. Further, a front gusset 42rigidly secured to the bottom plate 31 and the front face 38 of the backplate 32 provides extra structural integrity to the plow mount 30.

The plow mount 30 further comprises a top plate 40 and a spacer 41. Thetop plate 40 is vertically spaced apart from the bottom plate 31 by thespacer 41. The top plate 40 is clampable to the bottom plate 31 throughthe spacer 41 proximate a front end 39 of the bottom plate 31. The topplate 40 is spaced apart from the bottom plate 31 to provide a gapwithin which the drawbar 14 may be clamped when the top plate 40 isclamped to the bottom plate 31. The top plate 40, bottom plate 31 anddrawbar 14 comprise aligned through-apertures for receiving the hitchpin 20 to further secure the drawbar 14 to the plow mount 30. The topplate 40, spacer 41 and bottom plate 31 form a clamping connector forthe drawbar 14.

The mounting arrangement between the plow mount 30 and the tractor 10described above involves two modes in which the plow mount 30 is mountedon the tractor 10—a three-point hitch mode and a drawbar mode. To mountthe plow mount 30 on the tractor 10, the tractor 10 is backed up to thefront of plow mount 30 and the rear three-point tractor hitch 13 of thetractor 10 is connected to the front three-point mount hitch of the plowmount 30. The hydraulic cylinder 18 is then operated to raise the plowmount 30 until the drawbar 14 of the tractor 10 aligns horizontally withthe spacer 41 on the plow mount 30. The top plate 40 is then bolted tothe spacer 41 to capture a rear end of the drawbar 14 between the topplate 40 and the bottom plate 31 at the front end 39 of the plow mount30. The hitch pin 20 is then inserted through the alignedthrough-apertures in the top plate 40, drawbar 14 and bottom plate 31.When the plow 70 is being dragged by the tractor 10, the drawbar 14takes the majority of the longitudinal tractive effort while thethree-point hitches between the tractor 10 and the plow mount 30primarily help prevent lateral motion of the plow 70, the three-pointhitches taking only a small amount of the longitudinal tractive effort.In this manner, a lighter duty agricultural tractor may be utilized tooperate the plow.

At a rear face 50 of the back plate 32, a pair of horizontally orientedplow mounting brackets 51 for mounting the plow 70 to the plow mount 30.The plow mounting brackets 51 extend from the rear face 50 of the backplate 32 and comprise clevises 52 that receive therein tangs ofcorresponding mounting structures on the plow 70. Clevis pins insertedthrough clevis apertures 53 secure the plow 70 to the rear of the plowmount 30. Further structural strength of the plow mount 30 is achievedwith a rear gusset 54 rigidly secured to one of the plow mountingbrackets 51 and the rear face 50 of the back plate 32. The plow mountingbrackets 51 are strengthened with a pair of vertically oriented supportplates 55 situated between the two plow mounting brackets 51. Thesupport plates 55 are rigidly attached to the plow mounting brackets 51and the rear face 50 of the back plate 32. A pair of laterally spacedapart and vertically oriented support posts 56 slidable in respectivereceiver tubes 57 are used to support the plow mount 30 on the groundwhen the plow mount 30 is not mounted on the tractor 10. The supportposts 56 are vertically adjustable and securable in the receiver tubes57 at various heights by retaining pins 58. Cylinder mounting brackets59 extend from the rear face 50 of the back plate 32 between the plowmounting brackets 51, and serve as mounting points in the plow mount 30for hydraulic cylinders of the plow 70.

FIG. 5A and FIG. 5B illustrate an alternative embodiment 330 of a plowmount. The plow mount 330 is constructed and operates in essentially thesame manner as the plow mount 30 except in how the plow mount 330 ishitched to the tractor 10. Thus, the plow mount 330 comprises a bottomplate 331, a back plate 332 and a top plate 340 that are similar instructure and function as the corresponding elements in the plow mount30, except that the top plate 340 does not possess a through-aperturefor receiving a hitch pin. Instead, the plow mount 330 is provided witha pair of longitudinally extending lugs 361, 366 rigidly affixed, forexample by welding, to an upper surface of the bottom plate 331 and, ifdesired, to a vertical surface of the back plate 332. The lugs 361, 366are each provided with upturned hooks 360, 365, respectively, at frontends thereof. A drawbar 314 is provided with a transversely oriented pin318 rigidly affixed, for example by welding, to an underside of thedrawbar 314. Alternatively, instead of a single transversely orientedpin, two separate transversely oriented pins, one on each side of thedrawbar could be used. When hitching the tractor 10 to the plow mount330, the top plate 340 is disconnected from the plow mount 330, thetractor 10 with the drawbar 314 hitched thereto is driven so that thepin 318 becomes seated in the upturned hooks 360, 365, and then the topplate 340 is fixed to the plow mount 330, for example by bolting, sothat the drawbar 314 is clamped between the bottom plate 331 and the topplate 340 with the pin 318 seated in hollows of the upturned hooks 360,365. The arrangement illustrated in FIG. 5A and FIG. 5B permits quickerconnection of the tractor to the plow mount.

The plow 70 is similar to the trench former described in commonly ownedU.S. Pat. No. 8,047,744 issued Nov. 1, 2011, the entire contents ofwhich is herein incorporated by reference. The plow 70 is mountable on arear of the plow mount 30 utilizing the plow mounting brackets 51, whichare adapted to receive and secure existing mounting structures on theplow 70. The plow comprises a depth-adjustable blade 71 and a hydrauliccylinder 73 for adjusting depth of the blade 71 in the ground. Variousother hydraulic cylinders 72 provide the ability to adjust the plow 70in other ways, for example position of the plow 70 in a horizontal planeand height of the plow 70 in a vertical axis with respect to the ground.A unique feature of the plow 70 over the trench former of U.S. Pat. No.8,047,744 resides in the provision of electrically actuatable hydraulicvalves in fluid communication with the hydraulic cylinders 72, 73 and atleast three hydraulic fluid lines between the electrically actuatablehydraulic valves of the plow and the hydraulic circuit of the tractor10. The hydraulics are described in more detail below. To facilitaterapid mounting and dismounting of the plow 70, the electricallyactuatable hydraulic valves of the plow 70 comprise quick releasehydraulic connections.

The plow 70 is further provided with a second global positioning system75. The control interface 16 in the tractor 10 is in electroniccommunication with the first and second GPS systems 15, 75,respectively, for controlling operation of the plow 70 based oninformation provided by the first and second GPS systems 15, 75. Theinformation provided by the GPS systems 15, 75 may comprise position ofthe plow 70 in a horizontal plane, height of the plow 70 in a verticalaxis with respect to the ground and depth of the blade 71 in the ground,among others. The control interface 16 may be equipped with a wirelessdata connection to provide information on location and depth of thecontinuous elongated tubular material 2 to an internet database.

The fairlead structure 80 provides the ability to route the continuouselongated tubular material 2 from the reels 93 to the rear of the plow70 without interference from other elements of the system 1. Thefairlead structure 80 comprises first fairlead units 81 individuallyidentified at 81 a, 81 b mounted atop support arms 94 of the reel rack90 at a location higher than and in front of the cab 21 of the tractor10. The first fairlead units 81 receive the continuous elongated tubularmaterial 2 from the reels 93. The fairlead structure 80 furthercomprises a second fairlead unit 82 mounted atop a mast 85 at a locationhigher than and behind the cab 21 of the tractor 10. The mast 85 ismounted on the plow mount 30 and extends vertically from the plow mount30. The second fairlead unit 82 receives the continuous elongatedtubular material 2 from the first fairlead units 81. From the secondfairlead unit 82, the continuous elongated tubular material 2 extends toan arcuate guide 83 mounted on top of the plow 70, the arcuate guide 83guiding the continuous elongated tubular material 2 downward to a feeder84 mounted at a rear of the plow 70. The feeder 84 installs thecontinuous elongated tubular material 2 in a trench created by the blade71 of the plow 70.

Referring specifically to FIG. 6 , the hydraulic circuit 120 compriseshydraulic components 110 on the tractor 10 and hydraulic components 170on the plow 70. The hydraulic components 110 on the tractor 10 include ahydraulic pump 111 in fluid communication with a hydraulic fluidreservoir (not shown), a load-sensing main tractor valve 112, a shuttlevalve 113, fluid filters 114, the reel-rack hydraulic cylinders 115(supplied by lines A and B) and hydraulic fluid conduits 116 (only onelabeled) for transporting hydraulic fluid in the hydraulic circuit 120.The hydraulic components 170 on the plow 70 include a load sensing plowvalve assembly 171 (with a plow valve return 172 and a main plow supplyvalve 173), a power rewind 174 and capstan 175, a shaker motor 176, andvarious hydraulic cylinders including a hydraulic cylinder 181 forcontrolling blade height/depth, a main lift hydraulic cylinder 73 forcontrolling plow height, an attitude hydraulic cylinder 183 forcontrolling blade angle, two rear swing hydraulic cylinders 184 forcontrolling position of the plow in the horizontal plane, two frontswing hydraulic cylinders 185 also for controlling position of the plowin the horizontal plane and two front swing float valves 186 foradditional control over the two front swing hydraulic cylinders 185. Thevarious valves in the hydraulic circuit 120 are electronicallycontrollable from the control interface 16.

The hydraulic circuit 120 connects hydraulic components of the plow 70to hydraulic components of the tractor 10 through tractor-to-plowcouplings 121. The tractor-to-plow couplings 121 are quick connectcouplings to permit efficient connection and disconnection of the plow70 from the tractor 10. It is of especial note that the main tractorvalve 112 and the plow valve assembly 171 are load-sensing and that themain tractor valve 112 is fluidly connected to the plow valve assembly171 by three hydraulic lines, one of which is a supply line P, anotherof which is a return line T and the third of which is a load sense lineLS. When one or more of the hydraulic components 170 is activated on theplow 70, the main plow supply valve 173 signals the hydraulic pump 111on the tractor 10 to provide more hydraulic fluid flow to the one ormore activated hydraulic components 170. The main plow valve 173 has aspool across which is a pressure differential and the hydraulic pump 111tries to maintain a constant pressure drop in the load sense circuit.Therefore, when the main plow supply valve 173 is opened, the hydraulicpump 111 increases its output and when the main plow supply valve 173 isclosed the output decreases. The same is true for the load-sensing maintractor valve 112. Such a “power-beyond” arrangement permits interfacingexisting tractor hydraulics to the plow hydraulics.

Various hydraulic lines are also present in the hydraulic circuit 120 toprovide hydraulic fluid to hydraulic cylinders on the plow mount.

The novel features will become apparent to those of skill in the artupon examination of the description. It should be understood, however,that the scope of the claims should not be limited by the embodiments,but should be given the broadest interpretation consistent with thewording of the claims and the specification as a whole.

1. A system for installation of continuous elongated tubular material inthe ground, the system comprising: an agricultural tractor having a rearthree-point tractor hitch, a rear drawbar and rotatable elastomericground-engaging interfaces; a plow mount comprising a front three-pointmount hitch for connection to the rear three-point tractor hitch and aclamping connector for connection to the drawbar; and, a plow comprisinga depth-adjustable blade, the plow mountable on the plow mount.
 2. Thesystem of claim 1, wherein the rear three-point tractor hitch whenconnected to the front three-point mount hitch is operable to raise theplow mount to a height where the clamping connector can be connected tothe drawbar, and wherein during a plowing operation where tractiveeffort is created by drawing the plow through the ground, the drawbarand clamping connector experience most of the tractive effort and thethree-point hitches stabilize lateral movement of the plow mount whileexperiencing substantially less of the tractive effort than the drawbarand clamping connector.
 3. The system of claim 1, wherein the clampingconnector comprises a top plate and a bottom plate between which thedrawbar can be clamped, wherein the top plate, bottom plate and drawbarcomprise aligned through-apertures for receiving a pin to further securethe drawbar to the clamping connector.
 4. The system of claim 1, whereinthe clamping connector comprises a top plate and a bottom plate betweenwhich the drawbar can be clamped, wherein the drawbar comprises atransversely oriented pin and the bottom plate comprises at least oneupturned hook in which the transversely oriented pin can be seated tofurther secure the drawbar to the clamping connector.
 5. The system ofclaim 1, wherein the plow mount comprises: a horizontally orientedbottom plate; a vertically oriented back plate extending upwardly fromthe bottom plate proximate a rear end of the bottom plate; a pair offlanges having angularly oriented portions extending vertically andinwardly from lateral edges of the bottom plate to meet at an apex, theflanges having upper and lower vertically oriented portions, the uppervertically oriented portions of the flanges spaced apart to receive anupper hitch bar of the rear three-point tractor hitch in a first pinnedconnection, the lower vertically oriented portions of the flanges eachspaced apart from respective vertically oriented struts to receive lowerhitch bars of the rear three-point tractor hitch in second and thirdpinned connections, the first, second and third pinned connectionsforming the front three-point mount hitch, the upper and lower hitchbars forming the rear three-point tractor hitch; and, a top plate and aspacer, the top plate spaced apart from the bottom plate by the spacerand clampable to the bottom plate through the spacer proximate a frontend of the bottom plate, the top plate spaced apart from the bottomplate to provide a gap within which the drawbar may be clamped when thetop plate is clamped to the bottom plate, the top plate, bottom plateand drawbar comprising aligned through-apertures for receiving a pin tofurther secure the drawbar to the plow mount, the top plate, spacer andbottom plate forming the clamping connector for the drawbar.
 6. Thesystem of claim 1, wherein the plow mount comprises: a horizontallyoriented bottom plate; a vertically oriented back plate extendingupwardly from the bottom plate proximate a rear end of the bottom plate;a pair of flanges having angularly oriented portions extendingvertically and inwardly from lateral edges of the bottom plate to meetat an apex, the flanges having upper and lower vertically orientedportions, the upper vertically oriented portions of the flanges spacedapart to receive an upper hitch bar of the rear three-point tractorhitch in a first pinned connection, the lower vertically orientedportions of the flanges each spaced apart from respective verticallyoriented struts to receive lower hitch bars of the rear three-pointtractor hitch in second and third pinned connections, the first, secondand third pinned connections forming the front three-point mount hitch,the upper and lower hitch bars forming the rear three-point tractorhitch; and, a top plate and a spacer, the top plate spaced apart fromthe bottom plate by the spacer and clampable to the bottom plate throughthe spacer proximate a front end of the bottom plate, the top platespaced apart from the bottom plate to provide a gap within which thedrawbar may be clamped when the top plate is clamped to the bottomplate, the drawbar comprising a transversely oriented pin and the bottomplate comprising at least one upturned hook in which the transverselyoriented pin can be seated to further secure the drawbar to the plowmount, the top plate, spacer and bottom plate forming the clampingconnector for the drawbar.
 7. The system of claim 5, wherein the plowmount further comprises plow mounting brackets for mounting the plow tothe plow mount, the mounting brackets comprising clevises extending froma rear face of the vertically oriented back plate.
 8. The system ofclaim 7, wherein the plow mount further comprises a front gussetconnecting the horizontally oriented bottom plate and verticallyoriented back plate, and a rear gusset connecting the verticallyoriented back plate and at least one of the plow mounting brackets. 9.The system of claim 1, further comprising a rotatable reel supported onthe tractor, the rotatable reel comprising the elongated tubularmaterial for installing in the ground.
 10. The system of claim 9,further comprising a reel rack mounted on a front of the tractor forsupporting the rotatable reel at the front of the tractor.
 11. Thesystem of claim 10, wherein the reel rack comprises a three-pointconnection for connecting to a front three-point tractor hitch of thetractor.
 12. The system of claim 9, further comprising a fairleadstructure mounted on the tractor, plow mount and/or plow for guiding theelongated tubular material from the rotatable reel to a rear of theplow.
 13. The system of claim 1, wherein the elongated tubular materialis fiber optic cable, electrical cable, other wire material or piping.14. A system for installation of continuous elongated tubular materialin the ground, the system comprising: an agricultural tractor; a plowmounted on the tractor; a first global positioning system mounted on thetractor; a second global positioning system mounted on the plow; and, acontrol interface in electronic communication with the first and secondGPS systems for controlling operation of the plow based on informationprovided by the first and second GPS systems.
 15. The system of claim14, wherein the information comprises position of the plow in ahorizontal plane, height of the plow in a vertical axis with respect tothe ground and depth of plow in the ground.